EP2364881B1 - Automotive trim part for sound insulation and absorption - Google Patents

Automotive trim part for sound insulation and absorption Download PDF

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Publication number
EP2364881B1
EP2364881B1 EP20100155905 EP10155905A EP2364881B1 EP 2364881 B1 EP2364881 B1 EP 2364881B1 EP 20100155905 EP20100155905 EP 20100155905 EP 10155905 A EP10155905 A EP 10155905A EP 2364881 B1 EP2364881 B1 EP 2364881B1
Authority
EP
European Patent Office
Prior art keywords
layer
area
absorbing
porous fibrous
trim part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20100155905
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2364881A1 (en
Inventor
Claudio Bertolini
Claudio Castagnetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autoneum Management AG
Original Assignee
Autoneum Management AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP20100155905 priority Critical patent/EP2364881B1/en
Application filed by Autoneum Management AG filed Critical Autoneum Management AG
Priority to ES10155905.2T priority patent/ES2542886T3/es
Priority to PL10155905T priority patent/PL2364881T3/pl
Priority to MYPI2012700504A priority patent/MY166308A/en
Priority to CN201180013339.XA priority patent/CN102892631B/zh
Priority to MX2012010029A priority patent/MX2012010029A/es
Priority to ARP110100736A priority patent/AR080393A1/es
Priority to US13/043,748 priority patent/US8256572B2/en
Priority to JP2012556502A priority patent/JP5769737B2/ja
Priority to CA2788430A priority patent/CA2788430C/en
Priority to BR112012018864-0A priority patent/BR112012018864B1/pt
Priority to EP11708025A priority patent/EP2544922A1/en
Priority to PCT/EP2011/053530 priority patent/WO2011110587A1/en
Priority to RU2012142925/11A priority patent/RU2549581C2/ru
Priority to KR1020127023617A priority patent/KR101550234B1/ko
Priority to US13/043,756 priority patent/US8261876B2/en
Publication of EP2364881A1 publication Critical patent/EP2364881A1/en
Priority to ZA2012/05740A priority patent/ZA201205740B/en
Priority to US13/565,497 priority patent/US8636105B2/en
Priority to US13/570,730 priority patent/US8636106B2/en
Application granted granted Critical
Publication of EP2364881B1 publication Critical patent/EP2364881B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Definitions

  • the invention relates to an automotive trim part for noise attenuation in a vehicle.
  • Insulation is normally obtained by means of a classical spring-mass barrier system, whereby the mass is formed by a high density impervious material also known as heavy layer and the spring is formed by a low density material like non compressed felt or foam.
  • the stiffness of the spring is comparable to the sum of the compressibility of the air in the decoupling layer and the stiffness of its skeleton.
  • the thickness of the noise insulation barriers used is normally predetermined strictly by the vehicle manufacturer. If this is the case, and in particular where the insulating layer has a substantially uniform thickness, changes in the resonance frequency can be carried out by increasing the mass. It is known that the resonance frequency of noise insulation systems should not be in the same range of the disturbing motor frequencies.
  • Both the absorbing and insulating systems on their own have only a small bandwidth of frequencies where they work optimal.
  • the absorber works well more in the high frequencies, the insulator more in the low frequencies.
  • both systems are sub optimal for use in a modern vehicle.
  • the function of the insulator is strongly dependent on area weight and density, the higher the weight the better the insulator.
  • the absorber on the other hand is strongly dependent on the thickness of the material, the thicker the better. Both thickness and weight are becoming increasingly restricted. The space in a car where the trims are placed is restricted. The thinner the material the more spacious the vehicle becomes, this is a selling argument for a car.
  • the weight has a direct impact on the amount of fuel used during driving. Therefore, less weight is an economically and ecologically better option.
  • TL sound transmission loss
  • the ability of an acoustical barrier to reduce the intensity of the noise being transmitted depends on the type and structure of the materials composing the barrier.
  • the most important physical property controlling sound TL of an acoustical barrier is the mass per unit area of its component layers.
  • the heavy layer of a spring-mass should have a smooth and high-density surface to maximise reflection of noise waves, a non-porous structure and a certain material stiffness to minimize vibration. From this viewpoint, it is known that many textile fabrics, either thin and/or porous in structure, are not ideal for noise insulation.
  • JP 2001347899 discloses a classic spring-mass system with an additional absorbing layer on top of the mass layer. Mainly to absorb noise that leaked through holes in the part and is reflected back by the car interior. Because of this additional noise attenuation, the thickness and/or the density of the mass layer can be reduced.
  • a good balance of the insulation and absorption provided by the acoustic trim parts is required to reduce the sound pressure level in the passengers' compartment.
  • the different parts can have different functions (for example, insulation on the dash inner, absorption on the carpets), but there is a trend to achieve a more refined subdivision of the acoustical functions on the single areas, to optimise the global acoustical performance.
  • a dash inner can be split in two parts, one providing high absorption and another providing high insulation.
  • E dynamic Young's modulus Pa
  • v radiation frequency Hz
  • AW Area Weight kg/m 2
  • t thickness m
  • the dynamic Young's modulus should be at least 96-AW-t (Pa) with AW (g/m 2 ) and t (mm). This gives a high dynamic Young's modulus at which the material cannot be compressed easily anymore.
  • the trim part containing a porous fibrous layer with at least a dynamic Young's modulus of 96 ⁇ AW ⁇ t (Pa) a decoupling layer and an impervious film layer between the porous fibrous layer and the decoupling layer, all 3 layers laminated to form one part, will function as an acoustic spring-mass system, ergo as an insulating area.
  • the porous fibrous layer together with the film layer is an alternative mass layer and can replace the heavy layer material normally used. The material is cheaper and the overall part is easier to recycle in comparison to spring-mass systems using the classical filled heavy layer materials.
  • the porous fibrous layer can be any type of felt. It can be made from any thermo formable fibrous materials, including those derived from natural and/or synthetic fibres. Preferably the felt is made from recycled material like shoddy cotton, or other recycled fibres, like polyester.
  • the fibrous felt material comprises preferably a binding material, either in binding fibres or in resinous material, for instance thermoplastic polymers. At least 30% Epoxy resin or at least 25% bi-component binder fibres is preferred. Other binding fibres or materials achieving the porous fibrous layer according to the invention are possible and not excluded.
  • the thin barrier layer in particular a film, can be made from thermoplastic material like PVOH, PET, EVA, PE, or PP or dual layer materials like a PE/PA foil laminate.
  • the choice of the barrier material is dependent on the fibrous layer and on the decoupling layer and should be able to form a laminate binding all 3 layers together.
  • materials that are used as an adhesive either as film or powder can be used.
  • materials applied initially as a powder or in another form can be used as long as they form an impervious barrier layer after processing. The thickness should be adjusted to ensure a sound wave interaction. However, after the binding and/or forming the trim part, the film should be impervious to air in the final product.
  • the thickness of the decoupling layer can be optimised, however is mostly depending on space restrictions in the car.
  • the thickness can be varied over the area of the part to follow the available space in the car. Normally the thickness is between 1 and 100, in most areas between 5 and 20 (mm).
  • Sample A and B are classical spring-mass systems with an area weight for the heavy layer of respectively 2 (kg/m 2 ) and 1 (kg/m 2 ).
  • the insulating performance is high over a large range of frequencies and therefore the preferred system to use for noise attenuation in a car, however the system is much too heavy.
  • the material normally used for heavy layer in this case EPDM, is difficult to recycle.
  • the sound absorbing system - C - is lighter and therefore preferred.
  • the classical spring-mass systems - A and B - are still superior.
  • comparative sample C the material of the first layer felt starts radiating, thus producing sound waves and therefore noise again. This is visible in the IL curve by a dip at around 1600 (Hz), the radiation frequency of the material used.
  • Figure 7 shows an alternative layering according to the invention where the film and decoupler is available over the whole surface of the part including the absorbing area(s).
  • the film and decoupler is available over the whole surface of the part including the absorbing area(s).
  • the sound insulating trim part either as an insulator or as a combined insulator and absorber, with acoustic mass-spring characteristics with a mass layer consisting of a porous fibrous layer with a dynamic Young's modulus E of at least 96 ⁇ AW ⁇ t (Pa), and an air impermeable thin barrier layer, whereby the thin barrier layer is between the fibrous layer and the decoupling layer and all layers are laminated together, can be used in a car for instance as an inner dash as described previously. However it can also be used as a floor covering, eventually with a decorative layer or a carpet layer on top, whereby the carpet layer is preferably a porous system for instance a tufted carpet or a nonwoven carpet. It can also be used in outer or inner wheel liners. All applications can be in vehicles like a car or a truck.
  • I. Insulating area comprising

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Textile Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Laminated Bodies (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP20100155905 2010-03-09 2010-03-09 Automotive trim part for sound insulation and absorption Active EP2364881B1 (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
ES10155905.2T ES2542886T3 (es) 2010-03-09 2010-03-09 Pieza de moldura de interior de automóvil para el aislamiento y la absorción del sonido
PL10155905T PL2364881T3 (pl) 2010-03-09 2010-03-09 Motoryzacyjny element wykończeniowy do izolacyjności od dźwięku i pochłaniania dźwięku
EP20100155905 EP2364881B1 (en) 2010-03-09 2010-03-09 Automotive trim part for sound insulation and absorption
KR1020127023617A KR101550234B1 (ko) 2010-03-09 2011-03-09 차음 및 흡음을 위한 자동차 트림 부품
MX2012010029A MX2012010029A (es) 2010-03-09 2011-03-09 Accesorio para automotores para aislacion y absorcion sonora.
ARP110100736A AR080393A1 (es) 2010-03-09 2011-03-09 Accesorio para automotores para aislacion y absorcion sonora
US13/043,748 US8256572B2 (en) 2010-03-09 2011-03-09 Automotive insulating trim part
JP2012556502A JP5769737B2 (ja) 2010-03-09 2011-03-09 遮音および吸音用の自動車トリム部品
CA2788430A CA2788430C (en) 2010-03-09 2011-03-09 Automotive trim part for sound insulation and absorption
BR112012018864-0A BR112012018864B1 (pt) 2010-03-09 2011-03-09 parte de guarnição para isolamento sonoro e uso da mesma para uma parte automotiva
MYPI2012700504A MY166308A (en) 2010-03-09 2011-03-09 Automotive trim part for sound insulation and absorption
PCT/EP2011/053530 WO2011110587A1 (en) 2010-03-09 2011-03-09 Automotive trim part for sound insulation and absorption
RU2012142925/11A RU2549581C2 (ru) 2010-03-09 2011-03-09 Автомобильная часть отделки для изоляции и поглощения звука
CN201180013339.XA CN102892631B (zh) 2010-03-09 2011-03-09 用于声音隔离和吸收的汽车装饰件
US13/043,756 US8261876B2 (en) 2010-03-09 2011-03-09 Automotive trim part for sound insulation and absorption
EP11708025A EP2544922A1 (en) 2010-03-09 2011-03-09 Automotive trim part for sound insulation and absorption
ZA2012/05740A ZA201205740B (en) 2010-03-09 2012-07-30 Automotive trim part for sound insulation and absorption
US13/565,497 US8636105B2 (en) 2010-03-09 2012-08-02 Automotive insulating trim part
US13/570,730 US8636106B2 (en) 2010-03-09 2012-08-09 Automotive trim part for sound insulation and absorption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100155905 EP2364881B1 (en) 2010-03-09 2010-03-09 Automotive trim part for sound insulation and absorption

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP13163972 Division-Into 2013-04-16

Publications (2)

Publication Number Publication Date
EP2364881A1 EP2364881A1 (en) 2011-09-14
EP2364881B1 true EP2364881B1 (en) 2015-05-13

Family

ID=42541576

Family Applications (2)

Application Number Title Priority Date Filing Date
EP20100155905 Active EP2364881B1 (en) 2010-03-09 2010-03-09 Automotive trim part for sound insulation and absorption
EP11708025A Withdrawn EP2544922A1 (en) 2010-03-09 2011-03-09 Automotive trim part for sound insulation and absorption

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11708025A Withdrawn EP2544922A1 (en) 2010-03-09 2011-03-09 Automotive trim part for sound insulation and absorption

Country Status (14)

Country Link
EP (2) EP2364881B1 (es)
JP (1) JP5769737B2 (es)
KR (1) KR101550234B1 (es)
CN (1) CN102892631B (es)
AR (1) AR080393A1 (es)
BR (1) BR112012018864B1 (es)
CA (1) CA2788430C (es)
ES (1) ES2542886T3 (es)
MX (1) MX2012010029A (es)
MY (1) MY166308A (es)
PL (1) PL2364881T3 (es)
RU (1) RU2549581C2 (es)
WO (1) WO2011110587A1 (es)
ZA (1) ZA201205740B (es)

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EP3165658A1 (en) * 2015-11-04 2017-05-10 Autoneum Management AG Wheel arch liner for a vehicle
JP2017118042A (ja) * 2015-12-25 2017-06-29 株式会社ジャパンディスプレイ 積層フィルム、電子素子、プリント基板及び表示装置
FR3049752B1 (fr) * 2016-04-05 2018-05-11 Treves Products, Services & Innovation Procede de fabrication d’un panneau de protection acoustique pour vehicule automobile
IT201600128166A1 (it) * 2016-12-19 2018-06-19 Adler Evo S R L Struttura multistrato e componente per automobili fatto di tale struttura
EP3424698B1 (en) * 2017-07-07 2021-10-13 Autoneum Management AG Acoustic fibrous decoupler
EP3660833B1 (en) * 2017-07-28 2022-04-13 Nissan Motor Co., Ltd. Soundproofing material
JP7052403B2 (ja) * 2018-02-21 2022-04-12 トヨタ自動車株式会社 車両
FR3078040B1 (fr) * 2018-02-22 2020-03-13 Faurecia Automotive Industrie Piece d'insonorisation de vehicule automobile et procede de fabrication associe
CN109379682B (zh) * 2018-10-31 2021-04-02 歌尔股份有限公司 声学连接件及其制备方法和修复方法、发声装置
FR3088610B1 (fr) * 2018-11-15 2021-01-22 Renault Sas Corps de planche de bord a structure lacunaire et conduits de circulation de fluide integres
EP4084995A4 (en) * 2019-12-30 2023-07-26 Pimsa Otomotiv Anonim Sirketi COMPOSITE UNDER-VEHICLE PROTECTION
JP6858903B2 (ja) * 2020-04-28 2021-04-14 株式会社Ｈｏｗａ 車両用防音体及び車両用サイレンサー

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RU2012142925A (ru) 2014-04-20
CN102892631B (zh) 2015-09-30
JP5769737B2 (ja) 2015-08-26
EP2364881A1 (en) 2011-09-14
PL2364881T3 (pl) 2015-10-30
CA2788430C (en) 2015-02-03
EP2544922A1 (en) 2013-01-16
MX2012010029A (es) 2012-09-21
BR112012018864B1 (pt) 2019-11-12
ZA201205740B (en) 2013-04-24
MY166308A (en) 2018-06-25
RU2549581C2 (ru) 2015-04-27
ES2542886T3 (es) 2015-08-12
WO2011110587A1 (en) 2011-09-15
CN102892631A (zh) 2013-01-23
CA2788430A1 (en) 2011-09-15
KR101550234B1 (ko) 2015-09-04
KR20130038196A (ko) 2013-04-17
BR112012018864A2 (pt) 2017-11-28
JP2013521190A (ja) 2013-06-10

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